# Electra - Electronics Toolkit

> Electra - Electronics Toolkit (iPhone/iPad app by Ina okviana Risyadi.)

- Source: https://appshunter.io/ios/app/electra-electronics-toolkit/id6761523612 (this page in markdown: same URL + `.md`)
- Developer: [Ina okviana Risyadi](https://appshunter.io/developer/1890133881)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 22 MB
- Languages: English
- Released: 2026-04-03
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/electra-electronics-toolkit/id6761523612/reviews.md

## What is Electra?

Electra is a fast, offline-first electronics reference tool built for engineers, students, hobbyists, and makers.

Whether you're on the bench or in the field, Electra puts every essential calculation and reference at your fingertips - no internet connection required.

CALCULATORS

- Resistor Decoder: Read 4-band and 5-band color codes instantly
- Ohm's Law: Solve for voltage, current, resistance, or power
- LED Resistor: Calculate the correct current-limiting resistor
- SMD Decoder: Decode capacitor and inductor SMD markings
- Voltage Divider: Solve any variable in a resistor divider network
- Battery Calc: Estimate capacity and discharge time
- Resistor Network: Series and parallel combination solver
- RC / LC Filter: Cutoff frequency calculator for RC and LC circuits
- 555 Timer: Astable and monostable mode frequency calculator
- Voltage Regulator: LM317 output voltage calculator

REFERENCE

- Symbol Guide: Common electronics schematic symbols
- E-Series Values: Standard E6 / E12 / E24 / E96 component tables
- Formula Sheet: Quick-access electronics formulas

UTILITIES

- Base Converter: Convert between Binary, Octal, Decimal, and Hex
- Unit Converter: Instantly convert electronics unit prefixes (u, m, k, M, G)

LEARN

- Notes: Save tagged notes for formulas, tips, and component specs
- History: Jump back to any recent calculation in one tap

CUSTOMIZE

- Light, Dark, or System theme
- Adjustable decimal precision (1 to 6 places)

Electra requires no account, collects no personal data, and works fully offline.


## Version history (last 1 release)

### 1.0 — 2026-04-03

No release notes.

## More apps by Ina okviana Risyadi

- [Swander - Your next journey](https://appshunter.io/ios/app/swander-your-next-journey/id6764500989)

All apps by Ina okviana Risyadi: https://appshunter.io/developer/1890133881

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-08.*